Gayou, O. and Gao, J. (2002) Measurement of G_E_p/G_M_p in ep → ep to Q^2 = 5.6 GeV^2. Physical Review Letters, 88 (9). Art. No. 092301. ISSN 0031-9007. https://resolver.caltech.edu/CaltechAUTHORS:20140304-141858105
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Abstract
The ratio of the electric and magnetic form factors of the proton G_E_p/G_M_p , which is an image of its charge and magnetization distributions, was measured at the Thomas Jefferson National Accelerator Facility (JLab) using the recoil polarization technique. The ratio of the form factors is directly proportional to the ratio of the transverse to longitudinal components of the polarization of the recoil proton in the elastic ep → ep reaction. The new data presented span the range 3.5 < Q^2 < 5.6 GeV^2 and are well described by a linear Q^2 fit. Also, the ratio √Q^2 F_2_p/F_1_p reaches a constant value above Q^2 = 2 GeV^2.
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| Additional Information: | © 2002 The American Physical Society. Received 15 November 2001; published 12 February 2002. The Collaboration thanks the Hall A technical staff and the Jefferson Lab Accelerator Division for their outstanding support during the experiment. The Southern Universities Research Association (SURA) operates the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under Contract No. DEAC05-84ER40150. This work was also supported by the U.S. National Science Foundation and Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare (INFN), the French Commissariat à l’Energie Atomique (CEA) and Centre National de la Recherche Scientifique (CNRS-IN2P3), the Natural Sciences and Engineering Research Council of Canada (NSERC), the EEC Grants No. INTAS 99-00125 for the Kharkov Institute of Physics and Technology, and No. CRDF UP2-2271, and the Swedish Natural Science Research Council. | ||||||||||||||||||||||
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| Issue or Number: | 9 | ||||||||||||||||||||||
| Classification Code: | PACS: 25.30.Bf, 13.40.Gp, 14.20.Dh, 24.85.+p | ||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20140304-141858105 | ||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140304-141858105 | ||||||||||||||||||||||
| Official Citation: | Measurement of G_E_p/G_M_p in ep → ep to Q^2 = 5.6 GeV^2 O. Gayou et al. ((Jefferson Lab Hall A Collaboration)) Phys. Rev. Lett. 88, 092301 (2002) – Published 12 February 2002 | ||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||
| ID Code: | 44130 | ||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||
| Deposited By: | Ruth Sustaita | ||||||||||||||||||||||
| Deposited On: | 04 Mar 2014 23:15 | ||||||||||||||||||||||
| Last Modified: | 03 Oct 2019 06:14 |
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